CN205022896U - Exhaust passage with separate heat exchanger - Google Patents

Abstract

The utility model discloses an exhaust passage with separate heat exchanger belongs to the unmanned air vehicle technique field, exhaust passage with separate heat exchanger includes: blast pipe, blast pipe are installed on the fuselage, the exhaust end, the exhaust end setting is on the tip of blast pipe, and the exhaust end includes: a tapered section of thick bamboo, a tapered section of thick bamboo include wide mouthful tapered and tapered slot, just a plurality of flow hole has been seted up on the lateral wall of a tapered section of thick bamboo, the anechoic chamber, the anechoic chamber cover is established the peripheral position of a tapered section of thick bamboo, just the inside of anechoic chamber is provided with a gas vent. Separate heat exchanger, it sets up the peripheral position at engine and blast pipe respectively to separate heat exchanger, the utility model provides an owing to have solitary noise eliminator or a sound -attenuating structure among the prior art for there is great noise during blast pipe discharge tail gas, and then causes noise pollution's technical defect.

Description

There is the exhaust passage of heat baffle

Technical field

The utility model belongs to unmanned air vehicle technique field, particularly a kind of exhaust passage with heat baffle.

Background technology

Robot airplane is called for short " unmanned plane ", is the not manned aircraft utilizing radio robot to handle with the process controller provided for oneself.Without driving compartment on machine, but the equipment such as autopilot, process controller, information collecting device are installed.On ground, naval vessels or machine tool command and control station personnel by equipment such as radars, it is followed the tracks of, locates, remote control, remote measurement and digital communication.Can take off as conventional airplane under radio telecommand or launch with booster rocket, also can be taken to by machine tool and throw in flight in the air.

In prior art, at the sidepiece of depopulated helicopter fuselage, be provided with one for discharging the freeing pipe of tail gas, for discharging the tail gas of fuselage combustion.

But, when the tail gas in fuselage is discharged by freeing pipe, owing to not having independent silencing unit or noise elimination structure, there is larger noise when making freeing pipe discharge tail gas, and then cause noise pollution.

Utility model content

The utility model provides a kind of exhaust passage with heat baffle, by the end at freeing pipe, exhaust side is set, and this exhaust side is eliminated the noise to the tail gas entering exhaust side by tapered barrel and anechoic chamber, solve or partly solve in prior art owing to not having independent silencing unit or noise elimination structure, there is larger noise when making freeing pipe discharge tail gas, and then cause the technological deficiency of noise pollution.

The utility model provides a kind of exhaust passage with heat baffle, be applied to depopulated helicopter, described depopulated helicopter comprises fuselage, and be provided with driving engine in described fuselage, the described exhaust passage with heat baffle comprises: freeing pipe, described freeing pipe is arranged on described fuselage, and is connected with described driving engine, to collect the tail gas after described driving engine combustion; Exhaust side, described exhaust side is arranged on the end of freeing pipe, and described exhaust side comprises: tapered barrel, and described tapered barrel comprises tapered wide mouth and tapered slot, and the sidewall of described tapered barrel offers several communication port; Anechoic chamber, described anechoic chamber is set in the peripheral position of described tapered barrel, and the inside of described anechoic chamber is provided with an exhausr port; Heat baffle, described heat baffle is separately positioned on the peripheral position of described driving engine and described freeing pipe, make described driving engine and described freeing pipe isolated by the inner space of described heat baffle and described fuselage; Wherein, tail gas in described freeing pipe flows into the inner space of described tapered barrel by described tapered wide mouth, and entering described anechoic chamber from the inner space of described tapered barrel by described communication port and/or described tapered slot, described tail gas is discharged by described exhausr port.

Optionally, described freeing pipe comprises: the first pipe, and described first pipe is arranged on described fuselage, and is connected with described driving engine; Second pipe, described second pipe flexibly connects with described first pipe, make described first pipe relative movement can occur relative to described second pipe, and described exhaust side is arranged on the end portion place of described second pipe; Wherein, described first pipe and described driving engine communicate, and described first pipe and described second pipe communicate, and make the tail gas after described fuselage combustion flow into described exhaust side by described first pipe and described second pipe successively.

Optional: the U-shaped shape of described first pipe, and described first pipe comprises the second flexible ends; Described second pipe is in straight-tube shape, and described second pipe comprises the 3rd flexible ends, the two ends being arranged on described second pipe that described exhaust side and described 3rd flexible ends oppose; And, described in there is heat baffle exhaust passage also comprise: the second flexible connecting member, described second flexible ends is flexibly connected by described second flexible connecting member and described 3rd flexible ends, makes described second pipe relative movement can occur relative to described first pipe; Wherein, the tail gas in described fuselage after burning flows in described first pipe and is cushioned, and the described tail gas after buffering enters described second pipe by described second flexible ends and described 3rd flexible ends more successively, and discharges from described exhaust side.

Optionally, described second flexible connecting member comprises: the second spring assembly and the second plate group; Wherein, described second spring assembly comprises at least three the second springs; Described second plate group comprises the 3rd adapter plate and the 4th adapter plate; Described 3rd adapter plate is fixed in described second flexible ends, described 4th adapter plate is fixed in described 3rd flexible ends, and in described at least three the second springs, one end of each the second spring is connected with described 3rd adapter plate, and the other end is connected with described 4th adapter plate; Described 3rd flexible ends is set in described second flexible ends, and by described at least three the second springs, makes described 3rd flexible ends relative movement can occur relative to described second flexible ends.

Optionally, described heat baffle comprises: the first cover body, and described first cover body is arranged on the peripheral position of described driving engine; Second cover body, described second cover body is arranged on the peripheral position of described first pipe and described second pipe.

A kind of exhaust passage with heat baffle that the utility model provides, by the end at freeing pipe, exhaust side is set, the tail gas in freeing pipe is made to flow into the inner space of tapered barrel by tapered wide mouth, and enter described anechoic chamber from the inner space of tapered barrel by described communication port and/or tapered slot, eventually through tapered barrel and anechoic chamber, the tail gas entering exhaust side is eliminated the noise, solve in prior art owing to not having independent silencing unit or noise elimination structure, larger noise is there is when making freeing pipe discharge tail gas, and then cause the technological deficiency of noise pollution.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the integral structure front view when exhaust passage with heat baffle that the utility model embodiment provides is applied to depopulated helicopter;

Fig. 2 is the lateral plan of Fig. 1;

Fig. 3 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the part sectional view of the second side of depopulated helicopter;

Fig. 4 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the part sectional view of the 3rd side of depopulated helicopter;

Fig. 5 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the front view of the air inlet system of depopulated helicopter;

Fig. 6 for Fig. 5 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the integral structure schematic diagram of air inlet system;

The birds-eye view of the airscoop shroud of the air inlet system that Fig. 7 provides for Fig. 5;

The lateral plan one of airscoop shroud in the air inlet system that Fig. 8 provides for Fig. 7;

The lateral plan two of airscoop shroud in the air inlet system that Fig. 9 provides for Fig. 7;

Figure 10 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the front view of the exhaust system of depopulated helicopter;

The lateral plan of the exhaust system that Figure 11 provides for Figure 10;

The structural representation of the second flexible connecting member in the exhaust system that Figure 12 provides for Figure 10;

Figure 13 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, air inlet system and exhaust system do not comprise annexation schematic diagram during heat baffle;

The air inlet system that Figure 14 provides for Figure 13 and exhaust system do not comprise annexation front view during heat baffle;

Figure 15 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, air inlet system and exhaust system comprise annexation schematic diagram during heat baffle;

The air inlet system that Figure 16 provides for Figure 15 and exhaust system comprise annexation front view during heat baffle;

Figure 17 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the annexation front view of cooling system, driving engine and the first cover body;

The annexation schematic diagram of the cooling system that Figure 18 provides for Figure 17, driving engine and the first cover body;

Figure 19 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the annexation schematic diagram of air inlet system, cooling system, exhaust system;

The annexation front view of the air inlet system that Figure 20 provides for Figure 19, cooling system, exhaust system;

Figure 21 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the structural representation of cooling system;

The annexation schematic diagram of the cooling system that Figure 22 provides for Figure 21 and the first cover body;

The integral structure schematic diagram of centrifugal fan in the cooling system that Figure 23 provides for Figure 21;

The front view of centrifugal fan in the cooling system that Figure 24 provides for Figure 21;

Figure 25 for Fig. 1 provide the exhaust passage with heat baffle is applied to depopulated helicopter time, the structural representation of dynamic balance system;

The cutaway view of kinetic balance assembly in the dynamic balance system that Figure 26 provides for Figure 25.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection; Wherein involved in this enforcement "and/or" keyword, represent and or two kinds of situations, in other words, A and/or B mentioned by the utility model embodiment, illustrate A and B, A or B two kinds of situations, describe three kinds of states existing for A and B, as A and/or B, represent: only include A and do not comprise B; Only include B and do not comprise A; Comprise A and B.

Meanwhile, in the utility model embodiment, when assembly is called as " being fixed on " another assembly, directly can there is assembly placed in the middle in it on another assembly or also.When an assembly is considered to " connection " another assembly, it can be directly connected to another assembly or may there is assembly placed in the middle simultaneously.When an assembly is considered to " being arranged at " another assembly, it can be set directly on another assembly or may there is assembly placed in the middle simultaneously.The term " vertical " used in the utility model embodiment, " level ", "left", "right" and similar statement, just in order to illustration purpose, are not be intended to limit the utility model.

A kind of exhaust passage with heat baffle that the utility model embodiment provides, be applied to depopulated helicopter, by the end at freeing pipe, exhaust side is set, the tail gas in freeing pipe is made to flow into the inner space of tapered barrel by tapered wide mouth, and enter described anechoic chamber from the inner space of tapered barrel by described communication port and/or tapered slot, eventually through tapered barrel and anechoic chamber, the tail gas entering exhaust side is eliminated the noise, solve in prior art owing to not having independent silencing unit or noise elimination structure, larger noise is there is when making freeing pipe discharge tail gas, and then cause the technological deficiency of noise pollution.

Below, in order to the exhaust passage with heat baffle provided the utility model elaborates, to support technical problem to be solved in the utility model, first, the utility model embodiment first elaborates to the depopulated helicopter with the exhaust passage of heat baffle that application the utility model embodiment provides, and with the structure to exhaust passage, should be used as aid illustration.

Specifically, refer to Fig. 1-2, the depopulated helicopter of what the utility model embodiment provided the be provided with exhaust passage with heat baffle comprises head 1, fuselage 2 and afterbody 3.Wherein, described fuselage 2 comprises the first side 22, side 21, second, the 3rd side 23 and the 4th side 24.And the paddle 4 described first side 21 is provided with for described unmanned helicopter flight, described 4th side 24 is provided with the alighting gear 5 landed for described depopulated helicopter, described second side 22 and described 3rd side 23 are distributed in the both sides of described first side 21 and/or described 4th side 24 symmetrically, make to be surrounded by described first side 21, described second side 22, described 3rd side 23 and described 4th side 24 to form described fuselage 2.

Wherein, because unmanned helicopter-mounted equipment requirement is high, this makes the first side 22, side 21, second of fuselage 2 in the utility model embodiment, the 3rd side 23 and the 4th side 24 all select high-performance composite materials such as carbon fiber composite material, glass fiber compound material, honeycomb sandwich composite etc. to be made.Compared with traditional depopulated helicopter fuselage design material, the carbon fiber composite material selected by the utility model embodiment, glass fiber compound material, honeycomb sandwich composite etc. at least have following features: strength-to-density ratio and stiffness-to-density ratio is high, thermal expansion coefficient is little, anti-fatigue ability and vibration resistance strong.

In addition, the utility model embodiment makes fuselage 2 of the present utility model by selecting above-mentioned composite material, because composite material itself has designability, like this when not change structure weight, design can be optimized according to the strong and unyielding degree requirement of the intensity of aircraft, meet depopulated helicopter this requirement of large area global formation needed for height blended wing-body structure.And composite material has extremely strong decay resistance, the particular/special requirement of long storage life under can meeting depopulated helicopter harsh environment, reduces the life cycle cost of working service.

Moreover, composite material is applied to the depopulated helicopter being provided with freeing pipe that the utility model embodiment provides, because composite material has special electromagnetic performance, the high stealth technology requirement of depopulated helicopter structure/functions that the utility model embodiment provides can be met.And by selecting carbon fiber composite material, glass fiber compound material, honeycomb sandwich composite etc., also making the utility model embodiment have easily implantation chip or alloy conductor and forming the feature of intellectual material, structure.

Further, consult Fig. 3-4 in the lump incorporated by reference to Fig. 1-2, the depopulated helicopter that the setting that the utility model embodiment provides has the exhaust passage of heat baffle also comprises: cooling system 8, dynamic balance system 9, air inlet system 6 and exhaust system 7.Wherein, the exhaust passage with heat baffle that the utility model embodiment provides can be understood as in above-mentioned exhaust system 7.

In the utility model embodiment, air inlet system 6 is fixed on described second side 22, and the air intake direction of described air inlet system 6 is towards the direction of described head.Exhaust system 7 is fixed on described 3rd side 23, and the discharge directions of described exhaust system 7 is towards the direction of described afterbody 3, to be discharged by described exhaust system 7 by the tail gas produced that burns in described depopulated helicopter.Cooling system 8 is fixed on described first side 21, makes extraneous cold air be inhaled into the inside of described fuselage 2 by described cooling system 7, cools described fuselage 2.Dynamic balance system 9 is fixed on described afterbody 3 rotationally, and the rotational plane of the rotational plane of described dynamic balance system 9 and described paddle 4 is perpendicular, to be controlled the kinetic balance degree in described unmanned helicopter flight process by the rotation of described dynamic balance system 9.

In order to the depopulated helicopter being provided with the exhaust passage with heat baffle provided the utility model embodiment elaborates; Below, in conjunction with the drawings air inlet system 6, exhaust system 7, cooling system 8 and dynamic balance system 9 are described in detail one by one:

For air inlet system 6 part,

Refer to Fig. 5-6, described air inlet system 6 at least comprises: the airscoop shroud 61 that the utility model embodiment provides and driving engine 62.Wherein, airscoop shroud 61 is fixed on described second side 22, and the air intake direction of described airscoop shroud 61 is towards the direction of described head 1.Namely, relative to the air-flow of depopulated helicopter reverse flow flow direction the fuselage relative to unmanned plane backward time (can composition graphs 1,3 shown in), the air intake direction of the air-flow set by airscoop shroud 61, also relative to unmanned plane fuselage backward, can make the air-flow of depopulated helicopter outside like this under self flow velocity effect relative to described depopulated helicopter, flow into smoothly, fast and efficiently in airscoop shroud 61.Meanwhile, driving engine 62 is fixed on the inside of described fuselage 2, and between described second side 22 and described 3rd side 23, and described driving engine 62 is connected with described airscoop shroud 61, described air-flow is flowed in described driving engine 61 by described airscoop shroud 61 and burns.

Please continue see Fig. 7-9, in above-mentioned air inlet system 6, airscoop shroud 61 at least can comprise: ventilation inlet 611, filter screen 612 and surge chamber 613.Wherein, ventilation inlet 611 flows into for the air-flow relative to described depopulated helicopter reverse flow.And filter screen 612 is fixed on described ventilation inlet 611 place, for filling out the whole ventilation inlet 611 of envelope, reach the air plankton of the elements such as S, the N contained in removing air, be beneficial to the air after purification by airscoop shroud 61 and enter burning in driving engine 62, improve the object of the degree of purity of tail gas further.Meanwhile, a dividing plate 6131 is provided with in surge chamber 613.And by described dividing plate 6131, described surge chamber 613 is divided into first area 6132 and second area 6133, described air-flow through described filter screen 612 is introduced in described first area 6132 cushioned, and the described air-flow after buffering flows into described second area 6133 from described first area 6132 again, and flowed in described driving engine 62 by second area 6133.

It is worth mentioning that, the dividing plate 6131 arranged in surge chamber 613 is semiclapboards, can be understood as, by this dividing plate 6131, surge chamber 613 be divide into three parts, refer to Fig. 7, the right episphere that first part is the surge chamber 613 shown in Fig. 7, i.e. first area 6132; The second part is the left episphere of the surge chamber 613 shown in Fig. 7, i.e. second area 6133; The lower semisphere that 3rd part is the surge chamber 613 shown in 7, this lower semisphere described air-flow that can be understood as through described filter screen 612 is introduced in described first area 6132 and is cushioned, and the described air-flow after buffering flows into the circulation passage required for described second area 6133 from described first area 6132 again.And namely dividing plate 6131 is arranged between first area 6132 and second area 6133.Reach the object that the air-flow flowing into surge chamber 613 is cushioned, overcome due to ventilation inlet 611 flow into air-flow because of the flow velocity of self too fast, and cause the air-flow under flow at high speed directly by driving engine 62 and discharged by exhaust system 7 time, cannot Thorough combustion within the engine because of excessive velocities, then affect the technological deficiency of the power supply of depopulated helicopter.

Certainly, it will be appreciated by those skilled in the art that, by arranging dividing plate 6131, surge chamber 613 is divided into first area 6132 and second area 6133, so that the air-flow flowing into surge chamber 613 waits until that buffering is only a kind of embodiment of the utility model embodiment, not limitation.Also can design the inner structure of surge chamber 613 in other way, as, gas channel (being similar to the auto race track of ring-type) is in the form of a ring set in the inner space of surge chamber 613, the circulation under the effect of annular flow passage entering surge chamber 613 is flowed into, the flow velocity of air-flow is reduced gradually with this, or, several blinkers (being similar to the flabellum of electric fan) are set in the inner space of surge chamber 613, the speed under the effect of several blinkers entering surge chamber 613 is decayed, and then burn through in blinker inflow engine.In other words, as long as the air-flow flowed into by ventilation inlet 611 can be realized, to the surge chamber 613 that its flow velocity cushions before entering driving engine 62, all within the protection domain of the utility model embodiment.

For exhaust system 7 part,

Refer to Figure 10-16, described exhaust system 7 at least comprises: freeing pipe 71 and heat baffle 72.Wherein, freeing pipe 71 is arranged on described 3rd side 23, and the discharge directions of described freeing pipe 71 is towards the direction (can composition graphs 2 shown in) of described afterbody 3, to be discharged by described freeing pipe by the tail gas produced that burns in described driving engine 62.Here it should be noted that, because the discharge directions of freeing pipe 71 is towards the direction of described afterbody 3, that is, afterbody 3 is at the rear of depopulated helicopter, and so the discharge directions of freeing pipe 71 is towards the rear of depopulated helicopter.Because depopulated helicopter is in the process of flight, fuselage 2 has certain relative velocity relative to the air-flow of depopulated helicopter outside, when the discharge directions of freeing pipe 71 is towards the rear of depopulated helicopter, tail gas in freeing pipe 71 is under the effect of above-mentioned relative velocity, can discharge by freeing pipe 71 fast, improve the air-flow conduction property of fuselage 2 inside.

Meanwhile, because driving engine 62 is in the process of burning, and freeing pipe 71 is in the process of last person's gas, no matter is driving engine 62 or freeing pipe 71, all there is higher temperature.In order to avoid this higher temperature has influence on the miscellaneous part of fuselage 2 inside, cause miscellaneous part Yin Wendu too high and occur damaging or burning.The utility model embodiment, between described driving engine 62 and described freeing pipe 71, is also provided with heat baffle 72.With by described freeing pipe 72 and driving engine 62 isolated with the inner space of described fuselage 2.Prevent the high temperature of driving engine 62 and freeing pipe 71 self from having influence on the normal operation of depopulated helicopter to external diffusion.As preferably, please continue to refer to Figure 15-16, heat baffle 72 comprises the first cover body 721 and the second cover body 722.Wherein, the first cover body 721 is suitable with the shape of driving engine 62, is set in the outside of driving engine 62, and the second cover body 722 is suitable with the shape of freeing pipe 71, is set in the outside of freeing pipe 71.And can be fixedly connected with as welding between the first cover body 721 and the second cover body 722, also can be one-body molded being made.And, the top of the first cover body 721 is open type, the cold-air vent being convenient to cooling system 8 is connected mutually with the top of the first cover body 721, and the cold air in cooling system 8 is cooled driving engine 62 by entering in the first cover body 721 of the top of the first cover body 721.The inner structure of cooling system 8 can be described in further detail below, first sets forth exhaust system 7 herein.

Further, shown in Figure 10, the described freeing pipe 71 in exhaust system 7 can comprise: the first pipe 711, second pipe 712, first flexible connecting member 713 and the second flexible connecting member 714.

Wherein, the U-shaped shape of described first pipe 711.And described first pipe 711 comprises the first flexible ends 7111 for being connected with driving engine 62 and the second flexible ends 7112 for being connected with the second pipe 722.Described second pipe 712 is in straight-tube shape, and described second pipe 712 comprises the 3rd flexible ends 7121 for being connected with the first pipe 711 and the exhaust side 7122 for emission.Described first flexible ends 7111 is flexibly connected with described driving engine 62 by described first flexible connecting member 713, makes described first pipe 711 relative movement can occur relative to described driving engine 62.Described second flexible ends 7111 is flexibly connected with described 3rd flexible ends 7121 by described second flexible connecting member 714, makes described second pipe 712 relative movement can occur relative to described first pipe 711.

Specifically, by the first pipe 711 is designed to U-shaped shape, save the space of the first pipe 711 occupied by the inside of fuselage 2 on the one hand, on the other hand the tail gas of being discharged by driving engine 62 is once cushioned, make the described tail gas after once cushioning obtain first bounce.This is because in the tail gas of being discharged by driving engine 62, existence part is more or less not the gas of smokeless combustion, when so not the gas of smokeless combustion is discharged from driving engine 62 with tail gas, the tube wall of the first pipe 711 of tail gas and U-shaped shape collides, once cushioned, tail gas once after buffering obtains first bounce under the effect of the first pipe 711 tube wall, and now partial tail gas can continue to be back in driving engine 62 and burns under the effect of first bounce application force.Improve the work efficiency of driving engine 62.

Please continue to refer to Figure 11-12, as preferably, described in the utility model embodiment, the first flexible connecting member 713 comprises: the first spring assembly and the first plate group.Described second flexible connecting member 714 comprises: the second spring assembly and the second plate group.

Wherein, described first spring assembly comprises at least three the first springs 7131.Described first plate group comprises the first adapter plate 7132 and the second adapter plate 7133.Described first adapter plate 7132 is fixed on the air extractor duct place of described driving engine 62, and described second adapter plate 7133 is fixed in described first flexible ends 7111.And in described at least three the first springs 7131, one end of each the first spring 7131 is connected with described first adapter plate 7132, and the other end is connected with described second adapter plate 7133.Identical, described second spring assembly comprises at least three the second springs 7141.Described second plate group comprises the 3rd adapter plate 7142 and the 4th adapter plate 7143.Described 3rd adapter plate 7142 is fixed in described second flexible ends 7112, described 4th adapter plate 7143 is fixed in described 3rd flexible ends 7121, and in described at least three the second springs 7141, one end of each the second spring 7141 is connected with described 3rd adapter plate 7142, and the other end is connected with described 4th adapter plate 7143.

Specifically, in the utility model embodiment, the air extractor duct of driving engine 62 is set in described first flexible ends 7111, and by described at least three the first springs 7131, first adapter plate 7132 and the second adapter plate 7133 are flexibly connected, make like this first adapter plate 7132 and the second adapter plate 7133 under the effect of the first spring 7131 elastic pulling force or elasticity tension near or away from.Eventually through the first adapter plate 7132 and the second adapter plate 7133 near or can relative movement be there is away from realizing the first pipe 711 relative to driving engine 62.Identical principle, in the utility model embodiment, the 3rd flexible ends 7121 is set in described second flexible ends 7112, and by described at least three the second springs 7141,3rd adapter plate 7142 and the 4th adapter plate 7143 are flexibly connected, make like this 3rd adapter plate 7142 and the 4th adapter plate 7143 the second spring 7141 elastic pulling force or elasticity tension effect near or away from.Eventually through the 3rd adapter plate 7142 and the 4th adapter plate 7143 near or can relative movement be there is away from realizing the second pipe 712 relative to the first pipe 711.

Certainly, in the utility model embodiment, also can be that described first flexible ends 7111 is set on the air extractor duct of driving engine 62, described second flexible ends 7112 be set in described 3rd flexible ends 7121; Or described first flexible ends 7111 is set on the air extractor duct of driving engine 62, described 3rd flexible ends 7121 is set in described second flexible ends 7112; Or the air extractor duct of driving engine 62 is set in described first flexible ends 7111, described second flexible ends 7112 is set in described 3rd flexible ends 7121 and waits other array modes, and the utility model does not limit to.In other words, as long as can realize the first flexible ends 7111 relative to described driving engine, can there is the fixing mode of relative movement, all within protection domain of the present utility model relative to described 3rd flexible ends 7121 in the second flexible ends 7112.

It should be noted that, why need to realize the first flexible ends 7111 relative to described driving engine in the utility model embodiment, can relative movement be there is in the second flexible ends 7112 relative to described 3rd flexible ends 7121, because depopulated helicopter is in flight operation process, no matter be because fuselage interior assembly normally works, or because external air flow is to the impact of fuselage, or other external factors, capital makes the fuselage 2 of depopulated helicopter shake, particularly for exhaust system 7 and driving engine 62, therebetween a point of connection is only had, also be the point that driving engine 62 is connected with the first flexible ends 7111 of the first pipe 711.Like this because only there is an acting point, when vibrations occur, very easily cause driving engine 62 to be connected to damage with the appearance of the first pipe 711 and even to rupture, have a strong impact on the normal flight of depopulated helicopter.Therefore, driving engine and freeing pipe 71 are flexibly connected by the first flexible connecting member 713 by the utility model embodiment, make therebetween when whole fuselage 2 occurs frequently to shake, can the relative movement along with the vibrations of fuselage 2, and then actv. avoids because of the frequent vibrations of fuselage 2 technological deficiency that the connection of driving engine 62 and the first pipe 711 causes damage even to rupture.

Further, because the entire length of freeing pipe 71 is longer, when freeing pipe 71 exists an acting point with driving engine, due to the vibrations of fuselage 2, the whole pipe shaft of freeing pipe 71 is also very easily caused to rupture.Therefore, the utility model embodiment is by first pipe 711 of the second flexible connecting member 714 by composition freeing pipe 71, flexibly connect with the second pipe 712, make therebetween when whole fuselage 2 occurs frequently to shake, can the relative movement along with the vibrations of fuselage 2, and then actv. avoids the technological deficiency because of the frequent vibrations of fuselage 2, the whole pipe shaft of freeing pipe 71 being caused to fracture.

Please continue see Figure 10, for the exhaust side 7122 of the second pipe 712, at least comprise: tapered barrel 7123, anechoic chamber 7127.Wherein, described tapered barrel 7123 comprises tapered wide mouth 7124 and tapered slot 7125, and the sidewall of described tapered barrel 7123 offers several communication port 7126.Described anechoic chamber 7127, in hollow cylindrical, is set in the peripheral position of described tapered barrel 7123, and one end of described anechoic chamber 7127 is mated with described tapered wide mouth 7124 and alignd, and the other end wraps up whole tapered slot 7125.And one end that described anechoic chamber 7127 wraps up whole tapered slot 7125 is provided with at least one exhausr port 7128.The central axis of exhausr port 7128 and the central axis of tapered slot 7125 stagger mutually simultaneously, that is, the central axis of the two is not on the same line.

Specifically, above-mentioned elaboration passes through the first pipe 711 to be designed to U-shaped shape, tail gas to being discharged by driving engine 62 is once cushioned, tail gas once after buffering obtains first bounce under the effect of the first pipe 711 tube wall, and now partial tail gas can continue to be back in driving engine 62 and burns under the effect of first bounce application force.But, in order to improve the combustion efficiency of driving engine 62 further in the utility model embodiment, reach the object of the air smokeless combustion in driving engine 62.The utility model embodiment also designs tapered barrel 7123 structure comprising tapered wide mouth 7124 and tapered slot 7125 in exhaust side 7122, bore due to tapered wide mouth 7124 is greater than the bore of tapered slot 7125, the barrel dliameter of tapered barrel 7123 is reduced to tapered slot 7125 gradually by tapered wide mouth 7124, and then forms tapered structure.Enter the tail gas of the second pipe 712 from the first pipe 711, under the effect of the tapered wall of tapered barrel 7123, carry out secondary bounce-back, and then realize the secondary buffer of tail gas.Gas backstreaming after secondary buffer burns away to driving engine 62, reaches the object that the gas in driving engine 62 is burnt cmpletely, and being combined by once buffering and the secondary buffer of tail gas greatly improves the combustion efficiency of driving engine 62.

Meanwhile, due to the secondary buffer structure in order to form tail gas, the bore of the tapered slot 7125 therefore flowed out from tapered barrel 7123 for tail gas is less, and then tail gas list efficiency of giving vent to anger when tapered slot 7125 flows out is too low.Therefore, the utility model embodiment offers several communication port 7126 on the barrel of tapered barrel 7123, being convenient to tail gas flows in anechoic chamber 7127 by tapered slot 7125 on the one hand, on the other hand by tapered slot 7125 anechoic chamber 7127, and then while guarantee tail gas secondary buffer, also reach the object of the efficiency of giving vent to anger improving tail gas further.

Moreover mutually staggered by the central axis of the central axis of exhausr port 7128 and tapered slot 7125, that is, the central axis of the two is not on the same line.Like this because when tail gas directly discharges from tapered barrel 7123, larger at the effect noise of air-flow.And the utility model embodiment at tapered slot 7125 place of tapered barrel 7123 a sheathed anechoic chamber 7127 in hollow cylindrical, and one end that anechoic chamber 7127 is provided with exhausr port 7128 is provided with a flow-stopping plate, the plate face of this flow-stopping plate and the outgassing direction of tapered slot 7125 perpendicular.When tail gas is discharged by tapered slot 7125, the air-flow of discharge can collide the plate face of flow-stopping plate in anechoic chamber 7127, then rebounds.As everyone knows, in anechoic chamber 7127, when the air-flow rebounded meets with the air-flow just clashing into flow-stopping plate, by the principle of superposition (crest superposes with trough) of sound wave, the air-flow after superposing is made to reach the object of noise elimination.Finally, the air-flow after noise elimination discharges from exhausr port 7128.Serve the effect reducing depopulated helicopter exhaust noise to greatest extent.

For cooling system 8 part,

Refer to Figure 17-24, described cooling system part at least comprises: fairing 81 and centrifugal fan 82.Described fairing 81 is fixed on the first side 22 of described depopulated helicopter, and the cold air for the external world flows into.Centrifugal fan 82 is fixed on the inside of described fairing 81, and described centrifugal fan 82 is connected with described driving engine 62, and drive described centrifugal fan 82 to rotate by described driving engine 62, make the described centrifugal fan 82 after rotating drive described cold air to flow in described fairing 81.

Wherein, because driving engine 62 is in the process of burning, and freeing pipe 71 is in the process of last person's gas, no matter is driving engine 62 or freeing pipe 71, and the gas temperature due to inside is very high makes the two all there is higher temperature.In order to avoid this higher temperature has influence on the miscellaneous part of fuselage 2 inside, cause miscellaneous part Yin Wendu too high and occur damaging or burning.Refer to Figure 17,18,19 and Figure 21,22, by fixing a fairing 81 on the first side 22 of depopulated helicopter, the top of this fairing 81 is provided with an exit skirt, for the inflow of external air flow.The bottom of this fairing 81 is connected mutually with the first cover body 721 of heat baffle 721, the air-flow flowed into by the exit skirt of fairing 81 is made to enter in the first cover body 721 by the bottom of fairing 81, and then by the first cover body 721 by the different parts of air dispersion to depopulated helicopter fuselage 2 inside, reach the object that the inner space of unmanned aerial vehicle body is cooled, actv. avoids the miscellaneous part that higher temperature has influence on fuselage 2 inside, causes miscellaneous part Yin Wendu too high and occurs damaging or the technological deficiency of burning.

Meanwhile, flowed in fairing 81 by the exit skirt of fairing 81 fast and efficiently to more be conducive to extraneous air.As preferably, the utility model embodiment is also provided with centrifugal fan 82 in the inside of fairing 81.Can as shown in figs. 23-24, this centrifugal fan 82 is connected with driving engine 62 by power-transfer clutch 83, makes to drive centrifugal fan 82 to rotate by driving engine 62.Centrifugal fan 82 in rotation forms turbine whirlpool in the inner space of fairing 81, and then is sucked in fairing 81 by the cold air be in outside the exit skirt of fairing 81, and then cools the inner space of fuselage 2.Certainly, it will be understood by those skilled in the art that the rotation in order to realize centrifugal fan 82, except being driven by driving engine 62, other the actuating device with driving function can also be adopted to drive.Such as, drive battery by installing in the inside of centrifugal fan 82, or by external for centrifugal fan 82 driving power etc., be all applicable to the utility model.

For dynamic balance system 9 part,

Refer to Figure 25-26, described dynamic balance system 9 at least comprises: tail rotor 91, rotor shaft 92 and kinetic balance assembly 93.Wherein, described rotor shaft 91 is rotationally connected with described tail rotor 91 by described kinetic balance assembly 93, and the rotational plane of the rotational plane of described tail rotor 91 and described paddle 4 is perpendicular.

Specifically, two tail rotors 91 due to depopulated helicopter need, regulating along rotor shaft 92 direction being done kinetic balance, to make the connecting portion place of center of gravity near two tail rotors 91 of tail rotor 91, rotor shaft 92, to make complete machine steady.If but when blindly increasing the local weight of tail rotor 91/ rotor shaft 92 and achieve the above object, the rotating speed of tail rotor 91 also can be affected, and then affects the flight operation of depopulated helicopter.

But, the dynamic balance system 9 that the utility model embodiment provides, by other positions in non-tail rotor 91/ rotor shaft 92, set up kinetic balance assembly 93, under the speed conditions not affecting tail rotor 91, regulate the kinetic balance degree of complete machine, reduce afterbody 3 level of vibration of depopulated helicopter, overcome the local weight because blindly increasing tail rotor 91/ rotor shaft 92, and to the technological deficiency that tail rotor 91 rotating speed impacts.

Wherein, kinetic balance assembly 93 comprises: at least one pad 931, kinetic balance bar 932, first bolt 9324 and the second bolt 9325.And the end opens of described kinetic balance bar 932 has the first tapped bore 9321 and the second tapped bore 9322, the middle part of described kinetic balance bar 932 offers rotating hole 9323, and described rotor shaft 92 is rotationally connected with described tail rotor 91 through described rotating hole 9323.Being threaded with described first tapped bore 9321 of described first bolt 9324 correspondence, being threaded with described second tapped bore 9322 of described second bolt 9325 correspondence, and described pad 931 is placed between described first bolt 9324 and described first tapped bore 9321 and/or, described pad 931 is placed between described second bolt 9325 and described second tapped bore 9322.

As stated above, in order to avoid gaining in weight in the direct local in tail rotor 91/ rotor shaft 92, and tail rotor 91 rotating speed is impacted, the utility model embodiment offers the first tapped bore 9321 and the second tapped bore 9322 by adopting at the two ends of kinetic balance bar 932, and by between the first bolt 9324 and described first tapped bore 9321, or place pad 931 between the second bolt 9325 and described second tapped bore 9322, with this by controlling the quantity of pad 931, and then reach the object of fine adjustment depopulated helicopter afterbody kinetic balance degree, have the advantages that safety performance is high.

Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.

Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.

Claims (5)

1. have an exhaust passage for heat baffle, be applied to depopulated helicopter, described depopulated helicopter comprises fuselage, and is provided with driving engine in described fuselage, it is characterized in that, described in there is heat baffle exhaust passage comprise:

Freeing pipe, described freeing pipe is arranged on described fuselage, and is connected with described driving engine, to collect the tail gas after described driving engine combustion;

Exhaust side, described exhaust side is arranged on the end of freeing pipe, and described exhaust side comprises:

Tapered barrel, described tapered barrel comprises tapered wide mouth and tapered slot, and the sidewall of described tapered barrel offers several communication port;

Anechoic chamber, described anechoic chamber is set in the peripheral position of described tapered barrel, and the inside of described anechoic chamber is provided with an exhausr port;

Heat baffle, described heat baffle is separately positioned on the peripheral position of described driving engine and described freeing pipe, make described driving engine and described freeing pipe isolated by the inner space of described heat baffle and described fuselage;

Wherein, tail gas in described freeing pipe flows into the inner space of described tapered barrel by described tapered wide mouth, and entering described anechoic chamber from the inner space of described tapered barrel by described communication port and/or described tapered slot, described tail gas is discharged by described exhausr port.

2. have the exhaust passage of heat baffle as claimed in claim 1, it is characterized in that, described freeing pipe comprises:

First pipe, described first pipe is arranged on described fuselage, and is connected with described driving engine;

Second pipe, described second pipe flexibly connects with described first pipe, make described first pipe relative movement can occur relative to described second pipe, and described exhaust side is arranged on the end portion place of described second pipe;

Wherein, described first pipe and described driving engine communicate, and described first pipe and described second pipe communicate, and make the tail gas after described driving engine combustion flow into described exhaust side by described first pipe and described second pipe successively.

3. there is the exhaust passage of heat baffle as claimed in claim 2, it is characterized in that:

The U-shaped shape of described first pipe, and described first pipe comprises the second flexible ends;

Described second pipe is in straight-tube shape, and described second pipe comprises the 3rd flexible ends, the two ends being arranged on described second pipe that described exhaust side and described 3rd flexible ends oppose;

And, described in there is heat baffle exhaust passage also comprise:

Second flexible connecting member, described second flexible ends is flexibly connected by described second flexible connecting member and described 3rd flexible ends, makes described second pipe relative movement can occur relative to described first pipe;

Wherein, the tail gas in described fuselage after burning flows in described first pipe and is cushioned, and the described tail gas after buffering enters described second pipe by described second flexible ends and described 3rd flexible ends more successively, and discharges from described exhaust side.

4. there is the exhaust passage of heat baffle as claimed in claim 3, it is characterized in that,

Described second flexible connecting member comprises: the second spring assembly and the second plate group; Wherein, described second spring assembly comprises at least three the second springs; Described second plate group comprises the 3rd adapter plate and the 4th adapter plate; Described 3rd adapter plate is fixed in described second flexible ends, described 4th adapter plate is fixed in described 3rd flexible ends, and in described at least three the second springs, one end of each the second spring is connected with described 3rd adapter plate, and the other end is connected with described 4th adapter plate; Described 3rd flexible ends is set in described second flexible ends, and by described at least three the second springs, makes described 3rd flexible ends relative movement can occur relative to described second flexible ends.

5. have the exhaust passage of heat baffle as claimed in claim 2, it is characterized in that, described heat baffle comprises:

First cover body, described first cover body is arranged on the peripheral position of described driving engine;

Second cover body, described second cover body is arranged on the peripheral position of described first pipe and described second pipe.